1344431221 has 8 divisors (see below), whose sum is σ = 1558134144. Its totient is φ = 1136138640.

The previous prime is 1344431197. The next prime is 1344431233. The reversal of 1344431221 is 1221344431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1344431221 - 2⁷ = 1344431093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1344431821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1352050 + ... + 1353043.

It is an arithmetic number, because the mean of its divisors is an integer number (194766768).

Almost surely, 2^1344431221 is an apocalyptic number.

It is an amenable number.

1344431221 is a deficient number, since it is larger than the sum of its proper divisors (213702923).

1344431221 is an equidigital number, since it uses as much as digits as its factorization.

1344431221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2705171.

The product of its digits is 2304, while the sum is 25.

The square root of 1344431221 is about 36666.4863465263. The cubic root of 1344431221 is about 1103.6876843249.

Adding to 1344431221 its reverse (1221344431), we get a palindrome (2565775652).

The spelling of 1344431221 in words is "one billion, three hundred forty-four million, four hundred thirty-one thousand, two hundred twenty-one".